Revitamize LFP! Ascorbic Acid-Assisted Direct Regeneration of Spent LiFePO4 for Li-Ion Batteries Tassadit Ouaneche, Lorenzo Stievano, François Rabuel, Arash Jamali, Claude Guéry, et al. Batteries and Supercaps, 2025 The increasing demand for lithium‐ion batteries (LIBs), primarily driven by the expanding electric vehicle market and the growing need for efficient energy storage, presents both significant opportunities and challenges. The efficient and cost‐effective regeneration of spent LIBs is crucial to minimizing environmental impact and fostering a true circular economy for battery materials. Herein, an innovative one‐step lithiation process is introduced for spent LiFePO4 cathodes, conducted in aqueous solution under ambient conditions. This method utilizes readily available and low‐cost reagents, including a lithium source and ascorbic acid (vitamin C) as a green reducing agent, offering a substantial advantage over traditional techniques that require harsh conditions and complex setups. The lithiation reaction proceeds rapidly, producing pure and fully regenerated LFP. This environmentally friendly process was successfully demonstrated at the scale of 18650 cells with electrodes composed entirely of recycled LFP. These cells exhibit excellent electrochemical performance, even after 1000 cycles at 1C rate, comparable to those made with pristine LFP. By providing a sustainable, cost‐effective, and easily scalable solution for LFP cathode regeneration, the approach supports the closure of the materials loop, contributing to the sustainable management of LIBs and advancing the shift toward a circular economy.
Space Charge, Modulating the Catalytic Activity of Single-Atom Metal Catalysts Hansol Choi, Seung-Jae Shin, Geunsu Bae, Junsic Cho, Man Ho Han, et al. Journal of the American Chemical Society, 2025 Potential-induced electrode charging is a prerequisite to initiate electrochemical reactions at the electrode-electrolyte interface. The 'interface space charge' could dramatically alter the reaction environment and the charge density of the active site, both of which potentially affect the electrochemical activity. However, our understanding of the electrocatalytic role of space charge has been limited. Here, we separately modulate the amount of space charge (characterized by the areal density, σ) with maintaining the electrochemical potential for the oxygen reduction reaction (ORR) at the same level, by exploiting the unique structural feature of MeNC. We reveal that changes in σ control the ORR activity, which is computationally explained by the inductive polarization of the charge density at the active sites, affecting their turnover rates. To guide catalyst design including the space charge effect, we develop a new descriptor, explaining the activity trend in various metal centers and pH conditions using a single volcano. These findings offer fresh insights into the role of space charge in electrocatalysis, providing a new framework for optimizing catalyst design and performance.
Mechanistic Origin of Capacity Limitation in Sidorenkite-Type Na3-xFe (PO4)(CO3) Carbonophosphate Cathodes for Na-Ion Batteries SF Gatti, S Krarup Steensen, Ł Kondracki, H Fang, M Sougrati, I Castelli, ... ChemRxiv , 2026 2026
Mitigating structural deterioration via partial substitution with Fe in Mn-based Prussian white cathodes for Na-ion batteries A Clavelin, M Fehse, MT Sougrati, C Escudero, L Stievano, GA López, ... Journal of Materials Chemistry A 14 (12), 7150-7161 , 2026 2026 Citations: 1
Unravelling the Stability Stressors of Atomically Dispersed Fe–N–C Oxygen Reduction Catalysts X Xie, B Li, P Xu, MT Sougrati, R Garcia-Serres, DA Cullen, AJ Kropf, ... Journal of the American Chemical Society 147 (52), 48117-48126 , 2025 2025 Citations: 5
The synergistic effect of Bi and Fe co-doping on surface functionalization of microporous aluminophosphate photocatalysts for enhanced visible light H2 generation C Belayachi, S Larbaoui, H Hentit, G Bessaha, W Djelti, M Cherief, ... Applied Surface Science, 164773 , 2025 2025
Metals recovery by supercritical CO2 processes: a focus on Li-ion batteries metals extraction J Vauloup, R Mondal, C Bouilhac, MT Sougrati, L Stievano, N Coppey, ... The Journal of Supercritical Fluids, 106794 , 2025 2025 Citations: 3
Benzo-12-crown-4-ether-mediated lithium transport in supercritical CO2: A preliminary study for recycling lithium-ion battery cathode materials R Mondal, N Stoffregen, J Vauloup, C Bouilhac, N Coppey, L Monconduit, ... Chemical Engineering Journal Advances, 100883 , 2025 2025 Citations: 1
Mössbauer spectroscopy: a key tool to quantify Fe-speciation and distribution in H2-generating rocks U Geymond, K Loiseau, V Roche, G Pasquet, S Revillon, M Sougrati, ... Applied Geochemistry 187, 106399 , 2025 2025 Citations: 4
Evaluation of the performance and detection of the oxygen reduction reaction kinetics of metal doped imine framework in proton exchange membrane fuel cells Á Tolosana-Moranchel, N Bibent, JLG de la Fuente, MT Sougrati, ... Catalysis Today 456, 115320 , 2025 2025 Citations: 1
Revitamize LFP! Ascorbic Acid‐Assisted Direct Regeneration of Spent LiFePO 4 for Li‐Ion Batteries T Ouaneche, L Stievano, F Rabuel, A Jamali, C Guéry, L Monconduit, ... Batteries & Supercaps 8 (8), e202400765 , 2025 2025 Citations: 5
Structure and Activity-Durability Tradeoff of Carbon-Coated Fe-NC Catalysts for Oxygen Reduction L Jiao, G Bae, CH Choi, A Khan, A Zitolo, MT Sougrati, G Dražić, ... Electrochemical Society Meeting Abstracts 247, 2130-2130 , 2025 2025
Space charge, modulating the catalytic activity of single-atom metal catalysts H Choi, SJ Shin, G Bae, J Cho, MH Han, MT Sougrati, F Jaouen, KS Lee, ... Journal of the American Chemical Society 147 (16), 13220-13228 , 2025 2025 Citations: 8
Hierarchical Porous Fe 3 C@Fe‐N‐C Catalysts from Tannin‐Fe(III) Complexes for Efficient Oxygen Reduction S Pérez‐Rodríguez, D Torres, MT Izquierdo, A Zitolo, N Bibent, ... Small 21 (6), 2406887 , 2025 2025 Citations: 15
Challenges in the direct lithiation of spent LFP cathodes: the crucial role of reducing agents T Ouaneche, L Stievano, L Monconduit, C Guèry, N Recham, MT Sougrati Ees Batteries 1 (5), 1068-1082 , 2025 2025 Citations: 7
Role of Fe Impurity Reactions in the Electrochemical Properties of MgFeB 2 O 5 C Tacconis, S Dey, CD McLaughlin, MT Sougrati, CA O’Keefe, I Mikulska, ... Chemistry of Materials 37 (1), 463-472 , 2024 2024 Citations: 1
New Insights into the Crystal Structure of Fe 0.5 TiOPO 4 Anode Material for Lithium-Ion Batteries Using Non-Ambient X-Ray Diffraction Measurements K Lasri, A Mahmoud, MT Sougrati Electrochemical Society Meeting Abstracts prime2024, 5056-5056 , 2024 2024
In Operando Diagnosis of Site Density and Turnover Changes of Fe-NC Cathodes in Oxygen Electroreduction G Bae, MM Kim, MH Han, J Cho, DH Kim, MT Sougrati, J Kim, KS Lee, ... Electrochemical Society Meeting Abstracts prime2024, 4052-4052 , 2024 2024
Olivine NaMn 0.66 Fe 0.34 PO 4 as a Cathode Material for Advanced Sodium Ion Batteries T Ouaneche, L Stievano, L Monconduit, C Guéry, MT Sougrati, N Recham Batteries & Supercaps 7 (10), e202400214 , 2024 2024 Citations: 3
Towards a More Sustainable Leaching Process for Li-Ion Battery Cathode Material Recycling: Mechanochemical Leaching of LiCoO 2 Using Citric Acid J Vauloup, C Bouilhac, N Coppey, P Lacroix-Desmazes, L Stievano, ... ACS Sustainable Resource Management 1 (9), 2032-2040 , 2024 2024 Citations: 7
Efficient Direct Recycling of Spent Cathode Materials in Lithium-Ion Batteries T Ouaneche, L Stievano, L Monconduit, C Guery, MT Sougrati, N Recham Electrochemical Society Meeting Abstracts 245, 2929-2929 , 2024 2024
Iron-doped carbonaceous Fe-NC materials for electrocatalysis S Cavaliere HAL (Le Centre pour la Communication Scientifique Directe) , 2024 2024
MOST CITED SCHOLAR PUBLICATIONS
Identification of catalytic sites for oxygen reduction in iron-and nitrogen-doped graphene materials A Zitolo, V Goellner, V Armel, MT Sougrati, T Mineva, L Stievano, E Fonda, ... Nature materials 14 (9), 937-942 , 2015 2015 Citations: 2215
Reversible anionic redox chemistry in high-capacity layered-oxide electrodes M Sathiya, G Rousse, K Ramesha, CP Laisa, H Vezin, MT Sougrati, ... Nature materials 12 (9), 827-835 , 2013 2013 Citations: 1686
Better cycling performances of bulk Sb in Na-ion batteries compared to Li-ion systems: an unexpected electrochemical mechanism A Darwiche, C Marino, MT Sougrati, B Fraisse, L Stievano, L Monconduit Journal of the American Chemical Society 134 (51), 20805-20811 , 2012 2012 Citations: 1124
Highly active oxygen reduction non-platinum group metal electrocatalyst without direct metal–nitrogen coordination K Strickland, E Miner, Q Jia, U Tylus, N Ramaswamy, W Liang, ... Nature communications 6 (1), 7343 , 2015 2015 Citations: 736
Identification of durable and non-durable FeN x sites in Fe–N–C materials for proton exchange membrane fuel cells J Li, MT Sougrati, A Zitolo, JM Ablett, IC Oğuz, T Mineva, I Matanovic, ... Nature Catalysis 4, 10-19 , 2021 2021 Citations: 729
Chemical vapour deposition of Fe–N–C oxygen reduction catalysts with full utilization of dense Fe–N 4 sites L Jiao, J Li, LLR Richard, Q Sun, T Stracensky, E Liu, MT Sougrati, Z Zhao, ... Nature materials 20 (10), 1385-1391 , 2021 2021 Citations: 699
A Review on Design Strategies for Carbon Based Metal Oxides and Sulfides Nanocomposites for High Performance Li and Na Ion Battery Anodes Y Zhao, LP Wang, MT Sougrati, Z Feng, Y Leconte, A Fisher, M Srinivasan, ... Advanced Energy Materials 7 (9), 1601424 , 2017 2017 Citations: 662
High loading of single atomic iron sites in Fe–NC oxygen reduction catalysts for proton exchange membrane fuel cells A Mehmood, M Gong, F Jaouen, A Roy, A Zitolo, A Khan, MT Sougrati, ... Nature Catalysis 5 (4), 311-323 , 2022 2022 Citations: 623
Structural and mechanistic basis for the high activity of Fe–N–C catalysts toward oxygen reduction J Li, S Ghoshal, W Liang, MT Sougrati, F Jaouen, B Halevi, S McKinney, ... Energy & Environmental Science 9 (7), 2418-2432 , 2016 2016 Citations: 610
The Achilles' heel of iron-based catalysts during oxygen reduction in an acidic medium CH Choi, HK Lim, MW Chung, G Chon, NR Sahraie, A Altin, MT Sougrati, ... Energy & environmental science 11 (11), 3176-3182 , 2018 2018 Citations: 505
P -block single-metal-site tin/nitrogen-doped carbon fuel cell cathode catalyst for oxygen reduction reaction F Luo, A Roy, L Silvioli, DA Cullen, A Zitolo, MT Sougrati, IC Oguz, ... Nature materials 19 (11), 1215-1223 , 2020 2020 Citations: 426
Phase transitions in LaFeAsO: Structural, magnetic, elastic, and transport properties, heat capacity and Mössbauer spectra MA McGuire, AD Christianson, AS Sefat, BC Sales, MD Lumsden, R Jin, ... Physical Review B—Condensed Matter and Materials Physics 78 (9), 094517 , 2008 2008 Citations: 397
Slow magnetic relaxation in a family of trigonal pyramidal iron (II) pyrrolide complexes WH Harman, TD Harris, DE Freedman, H Fong, A Chang, JD Rinehart, ... Journal of the American Chemical Society 132 (51), 18115-18126 , 2010 2010 Citations: 392
A 3.90 V iron-based fluorosulphate material for lithium-ion batteries crystallizing in the triplite structure P Barpanda, M Ati, BC Melot, G Rousse, JN Chotard, ML Doublet, ... Nature materials 10 (10), 772-779 , 2011 2011 Citations: 388
Spectroscopic insights into the nature of active sites in iron–nitrogen–carbon electrocatalysts for oxygen reduction in acid Q Jia, N Ramaswamy, U Tylus, K Strickland, J Li, A Serov, K Artyushkova, ... Nano Energy 29, 65-82 , 2016 2016 Citations: 344
2021 roadmap for sodium-ion batteries N Tapia-Ruiz, AR Armstrong, H Alptekin, MA Amores, H Au, J Barker, ... Journal of Physics: Energy 3 (3), 031503 , 2021 2021 Citations: 341
Establishing reactivity descriptors for platinum group metal (PGM)-free Fe–N–C catalysts for PEM fuel cells M Primbs, Y Sun, A Roy, D Malko, A Mehmood, MT Sougrati, ... Energy & Environmental Science 13 (8), 2480-2500 , 2020 2020 Citations: 335
Evolution Pathway from Iron Compounds to Fe₁ (II)–N₄ Sites through Gas-Phase Iron during Pyrolysis J Li, L Jiao, E Wegener, LL Richard, E Liu, A Zitolo, MT Sougrati, ... J. Am. Chem. Soc. 142 (3), 1417-1423 , 2020 2020 Citations: 305
Minimizing operando demetallation of Fe-NC electrocatalysts in acidic medium CH Choi, C Baldizzone, G Polymeros, E Pizzutilo, O Kasian, ... ACS catalysis 6 (5), 3136-3146 , 2016 2016 Citations: 283
Nano-structured non-platinum catalysts for automotive fuel cell application A Serov, K Artyushkova, E Niangar, C Wang, N Dale, F Jaouen, ... Nano Energy 16, 293-300 , 2015 2015 Citations: 270
